ci starts bisection 2023-05-06 16:29:12.786810992 +0000 UTC m=+41183.048462808 bisecting fixing commit since ec35307e18ba8174e2a3f701956059f6a36f22fb building syzkaller on bcdf85f8bd3fccff5bc9507a589c4847d9b35405 ensuring issue is reproducible on original commit ec35307e18ba8174e2a3f701956059f6a36f22fb testing commit ec35307e18ba8174e2a3f701956059f6a36f22fb gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 9d2a3c3a0c80765b3320aee7e1bef340ab9f4756d65b384f337da6490b7946ae all runs: crashed: BUG: "hc->tx_t_ipi == NUM" holds (exception!) at net/dccp/ccids/ccid3.c:LINE/ccid3_update_send_interval() testing current HEAD ed23734c23d2fc1e6a1ff80f8c2b82faeed0ed0c testing commit ed23734c23d2fc1e6a1ff80f8c2b82faeed0ed0c gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 763b75559b7edc9411184b614cbcc7d9c22b8b3cbc1cfd2699a7c43ff06c3138 all runs: crashed: BUG: "hc->tx_t_ipi == NUM" holds (exception!) at net/dccp/ccids/ccid3.c:LINE/ccid3_update_send_interval() crash still not fixed/happens on the oldest tested release revisions tested: 2, total time: 25m41.183657673s (build: 18m17.061210331s, test: 6m20.604296743s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge tag 'net-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net crash: BUG: "hc->tx_t_ipi == NUM" holds (exception!) at net/dccp/ccids/ccid3.c:LINE/ccid3_update_send_interval() dccp_xmit_packet: Payload too large (65475) for featneg. BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() CPU: 1 PID: 5442 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8e/0xb0 lib/dump_stack.c:106 ccid3_hc_tx_update_s net/dccp/ccids/ccid3.c:169 [inline] ccid3_hc_tx_packet_sent+0xde/0x140 net/dccp/ccids/ccid3.c:353 ccid_hc_tx_packet_sent net/dccp/ccid.h:175 [inline] dccp_xmit_packet+0x28a/0x680 net/dccp/output.c:289 dccp_write_xmit+0x112/0x190 net/dccp/output.c:366 dccp_sendmsg+0x78a/0xa30 net/dccp/proto.c:788 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0xc0/0x150 net/socket.c:747 ____sys_sendmsg+0x5ff/0x8f0 net/socket.c:2503 ___sys_sendmsg+0xdb/0x160 net/socket.c:2557 __sys_sendmsg+0xc7/0x160 net/socket.c:2586 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ffa74c8c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffa759c3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffa74dabf80 RCX: 00007ffa74c8c0f9 RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00007ffa74ce7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe63f6897f R14: 00007ffa759c3300 R15: 0000000000022000 BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() CPU: 1 PID: 5442 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8e/0xb0 lib/dump_stack.c:106 ccid3_hc_tx_update_s net/dccp/ccids/ccid3.c:169 [inline] ccid3_hc_tx_packet_sent+0xde/0x140 net/dccp/ccids/ccid3.c:353 ccid_hc_tx_packet_sent net/dccp/ccid.h:175 [inline] dccp_xmit_packet+0x28a/0x680 net/dccp/output.c:289 dccp_write_xmit+0x112/0x190 net/dccp/output.c:366 dccp_sendmsg+0x78a/0xa30 net/dccp/proto.c:788 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0xc0/0x150 net/socket.c:747 ____sys_sendmsg+0x5ff/0x8f0 net/socket.c:2503 ___sys_sendmsg+0xdb/0x160 net/socket.c:2557 __sys_sendmsg+0xc7/0x160 net/socket.c:2586 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ffa74c8c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffa759c3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffa74dabf80 RCX: 00007ffa74c8c0f9 RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00007ffa74ce7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe63f6897f R14: 00007ffa759c3300 R15: 0000000000022000 BUG: "hc->tx_t_ipi == 0" holds (exception!) at net/dccp/ccids/ccid3.c:90/ccid3_update_send_interval() CPU: 1 PID: 5442 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8e/0xb0 lib/dump_stack.c:106 ccid3_hc_tx_update_s net/dccp/ccids/ccid3.c:169 [inline] ccid3_hc_tx_packet_sent+0xde/0x140 net/dccp/ccids/ccid3.c:353 ccid_hc_tx_packet_sent net/dccp/ccid.h:175 [inline] dccp_xmit_packet+0x28a/0x680 net/dccp/output.c:289 dccp_write_xmit+0x112/0x190 net/dccp/output.c:366 dccp_sendmsg+0x78a/0xa30 net/dccp/proto.c:788 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0xc0/0x150 net/socket.c:747 ____sys_sendmsg+0x5ff/0x8f0 net/socket.c:2503 ___sys_sendmsg+0xdb/0x160 net/socket.c:2557 __sys_sendmsg+0xc7/0x160 net/socket.c:2586 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ffa74c8c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffa759c3168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffa74dabf80 RCX: 00007ffa74c8c0f9 RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000000000004 RBP: 00007ffa74ce7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe63f6897f R14: 00007ffa759c3300 R15: 0000000000022000